add row/col major getters, plus unit-tests
git-svn-id: http://skia.googlecode.com/svn/trunk@1564 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/utils/SkMatrix44.cpp b/src/utils/SkMatrix44.cpp
index 803747f..3bf4949 100644
--- a/src/utils/SkMatrix44.cpp
+++ b/src/utils/SkMatrix44.cpp
@@ -43,6 +43,54 @@
///////////////////////////////////////////////////////////////////////////////
+void SkMatrix44::asColMajorf(float dst[]) const {
+ const SkMScalar* src = &fMat[0][0];
+#ifdef SK_MSCALAR_IS_DOUBLE
+ for (int i = 0; i < 16; ++i) {
+ dst[i] = SkMScalarToFloat(src[i]);
+ }
+#else
+ memcpy(dst, src, 16 * sizeof(float));
+#endif
+}
+
+void SkMatrix44::asColMajord(double dst[]) const {
+ const SkMScalar* src = &fMat[0][0];
+#ifdef SK_MSCALAR_IS_DOUBLE
+ memcpy(dst, src, 16 * sizeof(double));
+#else
+ for (int i = 0; i < 16; ++i) {
+ dst[i] = SkMScalarToDouble(src[i]);
+ }
+#endif
+}
+
+void SkMatrix44::asRowMajorf(float dst[]) const {
+ const SkMScalar* src = &fMat[0][0];
+ for (int i = 0; i < 4; ++i) {
+ dst[0] = SkMScalarToFloat(src[0]);
+ dst[4] = SkMScalarToFloat(src[1]);
+ dst[8] = SkMScalarToFloat(src[2]);
+ dst[12] = SkMScalarToFloat(src[3]);
+ src += 4;
+ dst += 1;
+ }
+}
+
+void SkMatrix44::asRowMajord(double dst[]) const {
+ const SkMScalar* src = &fMat[0][0];
+ for (int i = 0; i < 4; ++i) {
+ dst[0] = SkMScalarToDouble(src[0]);
+ dst[4] = SkMScalarToDouble(src[1]);
+ dst[8] = SkMScalarToDouble(src[2]);
+ dst[12] = SkMScalarToDouble(src[3]);
+ src += 4;
+ dst += 1;
+ }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
static const SkMatrix44 gIdentity44;
bool SkMatrix44::isIdentity() const {